Benefits of Using Aluminum Can Filling Machines for Carbonated Drinks

Views: 2369 Author: Howie SUN Publish Time:
A can line is rated in cans per hour because the seamer sets the pace, and the seam, not the filler, is where the rating is usually lost. These machines are designed to handle the carbonation pressure efficiently, ensuring that the drinks are filled without losing their fizziness.
Key facts at a glance
Filling systemIsobaric for beer and CSD, volumetric for juice and tea
CapacityUp to 25,000 CPH
Can sizesStandard 250, 330 and 500 ml
SeamingRoller seamer integrated with the filler
OptionsHot fill for juice and tea, nitrogen dosing
Key controlFill level, seam tightness, dissolved oxygen

Why is can filling measured in CPH and not BPH?

A can line is counted in cans per hour because the container is the unit the seamer closes. CPH and BPH cannot be converted without the fill volume, and the downstream packer is sized in cases per hour. Comparing a 24,000 CPH can line with a 24,000 BPH bottle line compares two different plants.

What does a can line cost to run that buyers forget?

Compressed air for the seamer and the air conveyor, CO2 for purging, and the tear-down cans used for seam checks every shift. None of these appear in the machine price. A line running 24,000 CPH can consume a measurable share of its operating cost in air alone.

ProductFilling principleCritical measurement
BeerIsobaric, coldDissolved oxygen and seam tightness
CSD and sodaIsobaric, coldCO2 retention and fill height
Juice and teaVolumetric or hot fillFill temperature and seam integrity
Energy drinksIsobaric or volumetricDissolved oxygen and closure

Rated output, change parts and services are listed on the Aluminum Can Filling Machine for Beer, Carbonated Soft Drink page.

What does a hot-fill can line need that a cold line does not?

A heated product path, a fill temperature control loop and a cooling tunnel after seaming. The can itself tolerates the heat; the lining and the product do not always. The temperature window belongs to the product specification.

Throughput and change-part lists are on the Aluminum Can Filling Machine for Hotfill Juice and Tea page rather than in this note.

Why is can handling gentler than bottle handling?

Cans are light and rigid, so they move on air conveyors and mass conveyors with low back pressure. Dents come from jams and from accumulation pressure, not from the filler. A can line that dents is a conveyor setting problem before it is a machine problem.

The same question is worked through from another angle in How Aluminum Can Fillers Handle Hotfill Juice.

How to read the numbers. The BPH figures quoted are reference ranges on the product specification. Can lines lose more to seamer stops and conveyor accumulation than to filler speed. Plan on a factor of 0.65-0.85.

Frequently asked questions

Can a can line run both 330 ml and 500 ml?

Yes, with change parts for the filler, the seamer and the conveyor. Changeover time is the real cost. Two formats on one line normally means 40-90 minutes per switch and a lower production factor.

Does a can line need nitrogen dosing?

It is common for beer, juice and some CSD, where headspace oxygen has to be pushed down. It is an option with a consumable cost, so it belongs in the utility and consumable schedule, not in the base price.

Why do cans dent on the conveyor?

Usually conveyor pressure or a jam at a transfer, not the can quality. Air conveyor pressure, guide rail gaps and accumulation length are the three settings to check first.

Does a 250 ml can run faster than a 500 ml can?

Yes, at the same filler, because the fill volume per cycle is smaller. The seamer and the packer still have to carry the higher can rate, which is why the line rating is set on cans per hour, not litres.

Key takeaways
  1. The seamer, not the filler, is where a can line loses its rating.
  2. Beer and juice cans share a format, not a filling specification.
  3. The seamer transfer is the most alignment-sensitive point on a can line.
  4. Seam quality needs a tear-down station at any volume.
About the author
Written by the Sunswell engineering team - led by Howie SUN, Founder & CEO, with 14 years in filling and blow-moulding equipment R&D and turnkey project delivery across 71+ countries.
Last reviewed: 2026-08-28 . Reviewed by Sunswell engineering team
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